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Finding the Fourth Proportional to 306,058.60, 459,087.90 and 221,421.70

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Solution

The fourth proportional to 306,058.60, 459,087.90 and 221,421.70 is: 332,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,058.60 : 459,087.90 = 221,421.70 : x
  2. Step 2: Convert to fraction form
    306,058.60/459,087.90 = 221,421.70/x
  3. Step 3: Cross multiply
    306,058.60x = 459,087.90 × 221,421.70
  4. Step 4: Simplify right side
    306,058.60x = 101,652,023,267.43
  5. Step 5: Solve for x
    x = 101,652,023,267.43/306,058.60
  6. Step 6: Final answer
    x = 332,132.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.